Devices with MAC addresses that start with B4-54-59 were manufactured by China Mobile (Hangzhou) Information Technology Co., Ltd.

Device Manufacturer
China Mobile (Hangzhou) Information Technology Co., Ltd.

Manufacturer Location
No. 1600 Yuhangtang Road, Wuchang Street, Yuhang District
Hangzhou Zhejiang 310000

Estimated Devices using B4-54-59
16,256,250

Estimated Total Devices From Mfg
113,793,750